Figure 2

Retrograde labeling of dural and facial skin afferent neurons from the same mouse. Representative images of a TG section showing DiI+ dural afferent neurons (A) and FG+ neurons innervating the periorbital skin (B). Note that there is no overlap between the dural and skin afferent neurons as seen in the merged image (C) A total of 425 dural and 360 skin afferent neurons from three mice were counted, respectively).